56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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This reads an OSM file and writes out the node locations to a cache
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file.
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The code in this example file is released into the Public Domain.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <iostream>
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#include <osmium/io/any_input.hpp>
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#include <osmium/index/map/dummy.hpp>
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#include <osmium/index/map/dense_mmap_array.hpp>
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#include <osmium/index/map/dense_file_array.hpp>
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#include <osmium/handler/node_locations_for_ways.hpp>
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#include <osmium/visitor.hpp>
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typedef osmium::index::map::Dummy<osmium::unsigned_object_id_type, osmium::Location> index_neg_type;
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//typedef osmium::index::map::DenseMmapArray<osmium::unsigned_object_id_type, osmium::Location> index_pos_type;
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typedef osmium::index::map::DenseFileArray<osmium::unsigned_object_id_type, osmium::Location> index_pos_type;
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typedef osmium::handler::NodeLocationsForWays<index_pos_type, index_neg_type> location_handler_type;
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int main(int argc, char* argv[]) {
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if (argc != 3) {
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std::cerr << "Usage: " << argv[0] << " OSM_FILE CACHE_FILE\n";
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return 1;
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}
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std::string input_filename(argv[1]);
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osmium::io::Reader reader(input_filename, osmium::osm_entity_bits::node);
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int fd = open(argv[2], O_RDWR | O_CREAT, 0666);
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if (fd == -1) {
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std::cerr << "Can not open node cache file '" << argv[2] << "': " << strerror(errno) << "\n";
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return 1;
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}
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index_pos_type index_pos {fd};
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index_neg_type index_neg;
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location_handler_type location_handler(index_pos, index_neg);
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location_handler.ignore_errors();
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osmium::apply(reader, location_handler);
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reader.close();
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return 0;
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}
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